Not work keyboard arrows to kommands.

[sv-atoslav]

Good time of day, developer.
I sometimes want edit already inputted line.
Steps to reproduse:
I want calc sum of two 5, divided by 10 .
I input wrong expression, and get wrong answer.
I decide add () . I press UpArrow at keyboard, but get ^[[A sequence (same key at bash return previous command). i press LeftArrow for go to start to line, but get ^[[A sequence.
Input ( , copy part of expression, input ), copy another part of expression it weird way for me. Please fix it.